• Title/Summary/Keyword: ratin

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Study on the Origin of the Herbal Medicinal woody Plants Genus from Herbalogy textbook (《본초학(本草學)》에 수록된 목본 약용식물의 속명(屬名)에 관한 어원 연구)

  • Joo, Jeoung-Sek;Lee, Soon-In;Jeong, Jong-Gil
    • The Korea Journal of Herbology
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    • v.27 no.4
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    • pp.89-97
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    • 2012
  • Objective : This study was carried out to clarify the origin of 94 genus for 125 species of herbal woody plants. Methods : The examined herbalogical books and research paper which published at home and abroad. Results : The generic names of 30.85% by ratin ; Ancient Greek and other language, 14.89% by the personal name, 12.77% by the growth characteristics, 8.51% by the shape of fruit and other related shape,, 6.38% by the place names, 5.32% by the colors have been named. Conclusion : According to the investigation which Origin of the Herbal Medicinal woody Plants Genus from Herbalogy textbook, The number of genus names which are originated from ratin ; Ancient Greek and other language by 30.85% was the most of all.

An study on the Noise rating of water supply and drain installations in apartment bathroom (급배수 설비소음 평가방법 선정을 위한 실험적 연구)

  • Lee, Tai-Kang;Ko, Kwang-Pil;Choi, Eun-Seok;Kim, Hang;Kim, Sun-Woo
    • KIEAE Journal
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    • v.7 no.1
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    • pp.57-64
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    • 2007
  • This study aims to propose appropriate evaluating method of noise emission from water supply and drain installations in apartment bathroom. The measurement procedure of water installations noise in apartment bathroom were established, so it is necessary to provide the evaluating method and criteria to improve the sound insulation performance of the apartment and to reduce the apartment dweller's unsatisfaction with the noise. Thus, this study reviewed the standards and evaluating methods about the water supply and drain installations noise of many other country. After measuring the noise emission from the installations in many apartment bathroom, The noise were evaluated dB(A), N, NC index, To induce the appropriate method, the coefficient of the correlation among the evaluated numbers were analyzed. As a result, the dB(A) method is most easy to evaluating and very high correlated with N and N index, So the dB(A) method is suitable to be adopted KS evaluating procedure of noise emission from water installations in apartment bathroom.

Reduction leaching of manganese nodule with copper matte (동매트를 이용한 망간 단괴의 환원 침출)

  • 한오형;최경수
    • Resources Recycling
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    • v.4 no.3
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    • pp.26-31
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    • 1995
  • The leaching characteristics of manganese nodules were investigated in dilute hydrochloric acid solution using copper malie as a reductant. Thc capper matte has been found to be an effective reductant for exhacting morc than 96% of Mn, 95% of Ni, 91% of Ca, 88% of Cu and 36% of Fe when leached in 2.5 M HCI at 70$^{\circ}$C for 2hr. The dissolutions of Mu, Co, and Ni depend on thc amaunt of added cappcr matte. 7he ratin of liquid and solid is an important [actor on the extraction of metals during leaching The dissolution af Mn, Co, Ni and Cu incrcascd w~th the increase in temperalure of leachant. The leaching rates of Mn, Co, NI and Cu from manganese nodule m the presznce of copper matte is limited by bath thc surface chemical reaction and pare diffusion processes. Thc activation energies far Mn. Co: Ni and Cu were 17. 61, 12.8, 17.2 and 57.88 KcaUmol, rcspcctively.

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A Comparative Study of High-Performance Liquid Chromatographic Method for Analysis of Ginseng Saponin (인삼(人蔘)사포닌분석(分析)을 위한 고속액체(高速液體)크로마토그래피법(法)의 비교연구(比較硏究))

  • Choi, Jin-Ho;Park, Kil-Dong;Han, Kang-Wan;Oh, Sung-Ki
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.11 no.3
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    • pp.81-86
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    • 1982
  • Ginseng saponins separated from Panax ginseng C.A. Meyer were analyzed by high-performance liquid chromatography using a carbohydrate analysis column. The effect on the resolution and retention time of each ginsenosides, as well as the addition effect of n-butanol on a acetonitrile/water system, was examined using various proportions of acetonitrile/water system (80/20-94/6) which have been used with typical solvent of carbohydrate analysis column. The retention time of each ginsenosides was greatly affected by the compositions and mixture proportions of the mobile phase and also markedly increased as the proprotion of acetonitrile in mobile phase increased. It was proved that acetonitrile/water system (80/20) and acetonitrile/water/n-butanol system (86/14/10) were very effective mobile phases for diol and triol sapoin analyses, respectively. According to the result obtained by this method, the PT/PD ratios of white and red ginseng saponins were 0.401 % and 0.561 %, respectively. Red ginseng increased PT/PD ratio, compared with white ginseng. This is attributed to the change of saponin pattern by processing method and the change of PT/PD ratio would greatly influence on the biochemical and pharmacological effects of ginseng and its products.

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